A digital VCSEL driver has been designed, simulated and assessed under radiation, using discrete SiGe HBTs. The circuit tolerates high levels of gamma radiation, up to 12 MGy, features less than 2 % drift in the forward current of the VCSEL and operates well above 10 MHz. The output duty cycle shows notable degradation at 200 kHz, enabling the design of robust analog and digital communication systems using pulse-width-modulation (PWM) schemes.
|Journal||IEEE transactions on nuclear Science|
|State||Published - Aug 2006|
|Event||Radiation and its Effects on Components and Systems (RADECS) - IEEE, Cap d'Agde|
Duration: 19 Sep 2005 → 23 Sep 2005